If the path to export layer is not selected, return the follow error.
An error has occurred while executing Python code:
IndexError: string index out of range
Traceback (most recent call last):
File "C:/Users/bonatop/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\VetEpiGIS-Tool\plugin\export.py", line 75, in filer
self.lineEdit.setText(sf[0])
IndexError: string index out of range
If the path to export layer is not selected, return the follow error.